The Research Of Chinese Musical Instruments Sampling Sound Bass Range Expanding Method

This paper will start with experimental design and logic. Using some method of pitch shifting in digital, several existing in the Chinese musical instrument timbre sampling bass register be expand by objective acoustic analysis and perceptual evaluation, layers of screening, selected with the most related modulation algorithm and the timbre, i.e., maximize the retention of the original instrument sampled sounds, spectral characteristics, and by the subjective and perception, perception transposition algorithms and methods to achieve the range of the original musical instruments sound natural transition, and, accordingly expand each voice sample, to explore Chinese musical instruments sound unique features, retaining the corresponding sampling sounds. After this, these sounds are made into digital audio sampling, by way of making electronic music used in the works, in order to explore the range extended China timbres of national musical instruments in the ensemble of national instruments have certain feasibility and comparative study of the related products, bass instruments used in the sound difference.This collection of experiments, analysis, creation, creation, research in one, is divided into six parts. The preface points out the purpose and the experimental design, introduces the origin and significance of the study. The first part is a brief review of the history of Chinese national bass instruments improvement, the research trends at home and abroad, introduces the application of tone sandhi algorithm all kinds of software and hardware, briefly introduces the experimental tools and other experimental standard. Screening screening of a statement of sampling the second part for instrument development experiment is divided into three chapters, each chapter corresponds to a large group of experiments, the chapters are linked together: the first chapter is a brief introduction of the tone sandhi methods from 15 application platform, pick out the tone sandhi methods, the use of research and development of the waveform, screened meet the target tone sandhi methods into the next chapter; the second chapter introduces the instrument sampling collection, planning, develop the subjective evaluation of specific sampling expansion program, and according to the existing 17 instruments sampled material, which in turn bring a chapter of tone sandhi methods of subjective evaluation, meet the demand of timbre will enter the next chapters. The third chapter will be to expand the timbre guest view of quantitative analysis, combined withWestern bass sampling acoustic analysis, to explore the Chinese national musical instrument and in the acoustic difference, concluded that the unique subjective and objective phenomena and pick out meet the condition of expanding sound sampling.The third part for extending the application of sampling, introduces development of the sound source production method, by means of electronic music production, will be screening timbre is applied to the actual work of inspection, the genre include:Chinese national chamber music, small compilation of Chinese national orchestral music and other related genres, the timbre of the application of subjective and objective to evaluate. The fourth part of the paper to save the relevant issues and ideas to make a reflection and discussion. Finally, the research results are summarized, and the deficiencies of the paper are summarized, and the prospects for the future development of the project are put forward.